Read this on a site about the days of the week (celtic), thought it was interesting
Welsh Days of the Week
On a Monday , marriages and loans were to be avoided because "work begun on Monday will never be a week old". Monday was considered a bad day to begin new endeavors.
Tuesday was thought a fortunate day, good for travelling and getting married.
Wednesday was believed to be a witching day, in which new projects should be avoided, for fear the witches might make plans go awry.
Thursday was an oportune day for a christening, but a bad day to move house.
Friday was the day that Adam and Eve were cast out of the Garden of Eden, and therefore represented the most unlucky day of all in the Welsh reckoning. Fruit trees were not to be pruned on a Friday, or else they would not blossom or bear for three more years. Waters were believed to be controlled by the fairies on Friday, and was also avoided.
Saturday was considered to be a lucky day in Welsh tradition. An ideal day for marketing or for conveying a newly-wed couple's belongings to their home, but never a good day for marriage, or else the couple might not live out the year.
Sunday was a good day for weddings. A knife-wound on a Sunday would be very slow to knit, a remnant of the tale of Lleu Llaw Gyffes, who was slain with a blade forged during the Sunday mass.
http://www.watson.org/~leigh/celts.html(looks like Saturday is the day for detecting)
